cirrostratus cloud

This high, thick cirrostratus cloud is a clear indicator of an approaching low.

Light comes from the sun and passes through a cirrus/cirrostratus cloud.

Apart from a few high streaks of cirrostratus cloud, the morning sky was empty blue.

They can also be the result of the thickening of a cirrostratus cloud.

Sunrise the next morning showed a dark blue sky streaked with high, filmy cirrostratus clouds.

At night, high thin cirrostratus clouds can lead to halos around the moon, which indicates an approach of a warm front and its associated rain.

Cirrostratus clouds commonly produce halos because they are composed almost entirely of ice crystals.

Cirrostratus cloud: A veil of thin ice cloud, with the sun clearly visible and casting shadows.

Cirrostratus clouds can appear as a milky sheen in the sky or as a striated sheet.

Cirrostratus nebulosus is a type of cirrostratus cloud.

When a warm front approaches, cirrostratus clouds deepen and lower into altostratus, and rain usually begins 12 to 24 hours later.

These halos form when light is separated into its various colours by the prism effect of the six sided ice crystals found in cirrostratus clouds.

Infrared satellite imagery showed the eye being obscured by high cirrostratus clouds, indicative of the weakening typhoon.

They often do mean that rain is going to fall within the next 24 hours as the cirrostratus clouds that cause them can signify an approaching frontal system.

Because the trail appears to stop as it runs into a veil of Cirrostratus cloud he thinks the cloud is shielding it and that's changing its appearance.

On a typical day in the fall there might be cirrostratus clouds overhead, all streaked and fine, with lumpy little cumulus clouds clumped on the horizon.

The presence of significant high cirrus or cirrostratus cloud cover indicates an organized low-pressure disturbance or an associated warm front is about 300 km away from the point of observation.

It is an atmospheric optical phenomenon associated with the reflection or refraction of sunlight by small ice crystals making up cirrus or cirrostratus clouds in the very particular case when the sun is still below the horizon.

The sun dogs or parhelia, in the painting erroneously pinned to the misinterpreted arcs of the circumscribed halo, are rather frequent optical phenomena which appear when sunlight is refracted by hexagonal ice crystals forming cirrus or cirrostratus clouds.

Cumulus humilis may be accompanied by other cloud types, and they are commonly seen beneath cirrostratus cloud, created as the heat from the sun needed for convection begins to cool, causing cumuliform clouds to flatten and become cumulus humilis.

Sometimes referred to as a parhelion or "mock sun", a sundog is a relatively common atmospheric optical phenomenon associated with the reflection / refraction of sunlight by the numerous small ice crystals that make up cirrus clouds or cirrostratus clouds.

A moon dog, moondog, or mock moon, (scientific name paraselene, plural paraselenae, i.e. "beside the moon") is a relatively rare bright circular spot on a lunar halo caused by the refraction of moonlight by hexagonal-plate-shaped ice crystals in cirrus or cirrostratus clouds.

Cirrostratus cloud sometimes signals the approach of a warm front if it forms after cirrus and spreads from one area across the sky and thus may be signs that precipitation might follow in the next 12 to 24 hours or as soon as 6-8 hours if the front is fast moving.

The Moon's appearance, like that of the Sun, can be affected by Earth's atmosphere: common effects are a 22 halo ring formed when the Moon's light is refracted through the ice crystals of high cirrostratus cloud, and smaller coronal rings when the Moon is seen through thin clouds.